Why early structural input saves redesign.

• Spans get honest
• Load paths get drawn
• Manufacturing gets considered

Most redesign in housing is not caused by bad design. It is caused by good design meeting structure too late. The concept is approved, the planning set is lodged, and only then does someone size the beams.

In a timber-framed house the structure is the architecture: wall frames set the openings, trusses set the ceiling, floor cassettes set the spans. When an engineer looks at the concept on day one, three things happen.

• Spans get honest. The eight-metre living room either gets a glulam beam in the plan now, or a steel surprise in the budget later.
• Load paths get drawn. Point loads from the roof find a stud or a post before the planning set fixes the window positions.
• Manufacturing gets considered. Panel sizes, truss profiles and lifting all shape detailing that costs nothing to accommodate early.

At NESCA, the structural engineer, detailer and estimator sit in the same workflow as the designer. The planning set already reflects a structure that works, so the working drawings are a development of it, not a rework.

The result is not a faster approval, which belongs to the authority, but fewer loops between approval and construction.